"In terms of rarity, to be here at a time when it's happening, you almost have to look at it," said Geoff Chester of the U.S. Naval Observatory. "It ain't going to happen again in my lifetime."

The last occurance was in 2004 and San Diegans didn’t have the chance to see it. In fact, the entire west coast of the U.S. missed out. If you’re too busy tonight, you’re out of luck. The next event won’t occur for another 105 years.

During the transit, Venus will appear as a beauty mark moving across the face of the sun.

The transit will involve a 6-hour, 40-minute span starting just after 3 p.m.

Because the transit will take place during and after sunset here in San Diego, we won’t be able to see the exit from our vantage point.

If you want to catch a glimpse you should only look at the celestial event with a properly filtered telescope or cardboard eclipse glasses.